It may be part of Lindisfarne's post office, but you can cast aside any concerns you have about 1st Class Food's unusual location: it's actually one of the best cafes on the island. Slide into a lipstick-red booth and order the excellent Northern Edge coffee (roasted in Berwick-upon-Tweed). Add some homemade crab cakes, a full breakfast, or a sumptuous slice of cake.
Takeaway crab sandwiches and pies are available at the Post Office counter.